Perigean Spring Tides — Predicting Potential Disasters: How Tidal Information May Save You From a Coastal Crisis Perigean Spring Tides -- Predicting Potential Disasters: How Tidal Information May Save You From a Coastal Crisis Helpful to educators and students. Giese, G.S. Marine Extension Bulletin, 2 pp., 1998 WHOI-G-98-007 Posted in 1998, Coastal Processes, Waves, Tides, and Currents